Contact Signal of Automatic Clean Door

The contact signal of the automatic clean door can be divided into microwave radar and infrared sensors. These two are the two commonly used signal sources.

Microwave radar

Microwave radar is the displacement of the object reaction, and thus the reaction speed is fast, suitable for walking speed normal personnel through the place, its characteristic is once in the door near the personnel do not want to go out and stationary, the radar will no longer react, the automatic clean door will be closed, the door machine has a certain protective effect.

Infrared sensor

The infrared sensor reacts to the presence of objects, regardless of whether the person moves or not, as long as it is in the scanning range of the sensor, it will react that transmits the contact signal. The disadvantage is that the response speed of the infrared sensor is slow, and it is suitable for places where there are slow-moving people entering and leaving. In addition, if the automatic clean door accepts the contact signal for too long, the controller will think that the signal input system is obstructed. Also, automatic clean doors can cause damage to electrical components if they are kept open for too long.

Contact type

Since microwave radar and infrared sensors do not know if the approaching person really needs to enter the door, there are occasions when a pushbutton switch is preferred. A pushbutton switch can be a contact-type button, or more conveniently, an elbow-touch switch. The elbow-touch switch is very durable, especially since it can be operated with the elbow. Hand contact is avoided. There is also the so-called footswitch, which has the same function but has higher requirements for waterproofing, and the force of the foot pedal is so great that it can easily make the footswitch fail. There is also a puller with a contact switch, which provides a contact signal to the door machine when the puller is pushed (or pulled in the opposite direction) into place.

Wireless Receiver

Nowadays, building automation sometimes makes special requests, such as using a particular branch line of the telephone to control the door opening. To meet this requirement, just make sure that the signal is a passive contact signal. In rare cases, people ask for an antenna remote control. A contact connection with a wireless receiver to an automatic clean door and a wireless transmitter will meet the requirement. However, there are too many radio wave sources nowadays, which can easily lead to accidental door opening being a troublesome problem.

EZONG Automatic Clean Door

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